Supporting pin



Aug.'3, 1943. H. J. DAILEY EI'AL SUPPORTING PIN Filed Dec. 30, 1941 6Y4 2W Nua R WA 0 WDK n J: Av M the interior electrodes fand parts throughout the severalviewsfl v charge therein? V v V i g Figure 2 is a detail cross-section on line II-II ofFig. 1;and

Patented Aug. 3, 1943 s ApplicationDecejmben 30,1941;

i g} 49oltimsg; (ctzs'a zms) a j invention relates to supporting pins; and more particularly to pins employed as part for electron discharge devices for I support of interior; parts item the glass or other ceramidwalljof the envelope. ,t t .Inthe electronic art, the production tifhe'eit in new: ma esa as l a e pl me txo heat, as tor scldering, sealing,}fiashing, and other purposes, results in "different parts, :espec ially those having different coeflicients ex ansi n;-

beinglsubjectedto strains; Manydefe'ctive devices are directly traceable to the deleterioii s heat efleotaf M d t n bies of "P e e t inve n s .t x e come deleterious effects of *h 1 5 9 9 13 9? developed by an electron dischargeidev icey l w 1 'llnotherflobiect of the inventionris-to provide for accomodatiori of uneven or dissimilar expan eiofior normally'ri d and connected parts? i "A turther' objectot the invention is to enable nietallicparts inan electron dischargedevicef to L expand without unduehinderance from connec= tion with the glass envelope, and vice versa,

" Yet another object offlthe invention is" to reduce transmission or heat due conduction to or trim;

parts.

progresses,

' aifidhy implication irom the' context.

1 Referring to; the accompanying drawing Kin whichlike numerals of eference indicate similar Figure '1 is, a sectional view of an electron device showing our invention incorporated Figure 3 is a perspective view of one or the pins or posts embodying our invention. it w l In the specific embodiment of the'invention illustrated in said drawing, there is shown, by way of example; an electron discharge device which comprises a glass or other ceramic bowl l0, g here represented as part of an evacuated 'envelope, a metallic dome-like anode I l beingsealed v in the rim thereof to constitute the complement arypart of said envelope. For convenienc of reference, said glass bowl lllwill be considered as the base portion of the envelope. From the bottom of this bowl or base protrude a plurality cuit connections and for support ofthe device.

These thimbles have enlarged cylindrical feather 'oth b direct recitation thereoif V t edges 13 next sealed connection and/or breakage or of the glass in theviciriity thereof. 'l

or; to Westinghouse Electric;&;Manufacturin v umm E t Pitt w l rv -aacar a -Mi Seria1No.424,862

by tothe glass; Afieature of the present invention is to overcome prevalent" disruptionof thifs' fl lie electron dlscharge deviceincluds'thereifi i a grid l4 and cathode I 5. "Supporting fconne c tion from the-1 mentioned electrodes to l the said thimblesis made by pins or posts o f 'whi'crr-those shown are designated 16, I1, wand 1am "rererence purposes, The pins or pests are essentially thefsame; difiering Only detail so'th'at descripla t tion of one will answerfor e1 3 For that purpose;

, particular attention will be directed to the piri ii-post l6 at the left of Fig"; 1; section thereof in Fig; 2," and perspective view thereor comprisin a {Said'pinfor stis arelativelylong'thin'cylina drical structure the lower end-er which isfjs'emii spherical, as at '20; ,The upperiendfof "the' p'a ticular pin shownhas a coaxial threaded-holelt thereini- Intermediate theends "ofthe pin; the

same provides'a thinsl'iank 22' coaxial withthe larger-diameter lower .,a nd upper naxpbrtisns 23; 24 respectivelyfl'll'he intermediate portionwor shankfn is less than" halrthe length of the entire pin an d preferably not more than a third of the v 1 length nor anylonger thaneither of the end'portions 23; 24. Furthermore, the diameter of-the 30 meter of, the upper end portion;* Diameter "of shank is"preferablynot'rnorethan half theditheilower enfd portionH-is variable to iiti the embl m mcwsmane the c ns ction shown an be i t i .ijaing dimensions of the; approximate proportions glvemand appropriate choice offl'exible material? preferably hard copperfadequate supporting of thimbles I! or similar character and "constitut inglprongs as a means for making exterior cirstrength ismaintained. The end portions'2 3, 24 of the pin are rigid, but by virtue of th reduced diameter of the shank, a degreefof lateral flexing of the pin thereat is available. Resistance 01' counter f oroe to such flexingf'is obtained by the.

mounting of the lower part} or thefpin in the thimble and mounting'of the feather edge of the thimble in the glass of the bowl. 'I'hlat mounting is adequateto retain the lower end portion 23 of the pinfixed while the shank portion flexes; without disrupting the seal or cracking the glass.

It is appropriate to notethat a plate 25 carrying grid- I4 is situatedtransversely at thejtopof 1v the "post I5 described and secured thereto by screw 26, and is'attached to other posts shown y andnot shown; That plate,ujundervarying heat conditions expands and contracts,-the pins being necessarily shifted thereby laterally at their up 1 v the glassbowl and ae'seaieethere;

7 per ends. i Prior, toiour invention that shifting other: portions, said pin resulted in. a necessaryshift or swing of the en V V j tire pin or post, with terrific strainfon the feather -edge of the thir'nble'to compensate therefor.

By' virtue of thepresent invention, the thinned section of thepinyor post introduces flexibility thereat which thereby absorbs most of the strain heretofore carried by the feather-edge.

In actual practice, failuresand breakage due to strains on the thimble and associated glasshave been practically eliminated.

It is also of importance to observe that While the particular pin selectedsfor descriptive pindiameter than other portions thereof,

poses above isone connectedto thef'grid-supporting plate, other similar pins support the oathode through appropriate connections and plates, The lower ends of the pins substantially fit Within dered or otherwise held therein. 'Byfvirtue of the thinned portion orshank 22 of the pin, the

its: encompassing ,thimbl'e which is a greatly :Since-the; various details of construction, as

well as the} precise 1 relation and functioning of parts-aresubject to variation-and change-without departing'from the inventive concept orscope of' the -invention, it is intended that all -matter contained. im -the specification" or illustrated 'in the .drawirigshall be interpreted as exemplary i the prong portions of thimblesJZ and are-sole 1 l V 3. In an electronic device having a transverse plate and an electrode carried by said plate, an

' envelope having a thimble exterior thereof, and

a pin connecting said plate and thirnble, said pin 7 having a flexible portion.

4. In an electronic device having a' transverse plate and anelectrode carriedby said plate, an

envelope having athimble exterior thereof, and a pin connecting said plate and thimble, said pin having a. portion of its length thinned to less 5.1m an electronic device having a transverse plate and'an electrode carried by said plate, an

envelope having a; thimble exterior thereof, and

a pin connecting said plate and thimble, said pin 1 V 7 having apportion of its length thinned to less diameter" than 7 other portions thereof, said thinned portion being flexible.

6. In an electronic device having-a transverse plate and an electrode carried by said plateQan envelope having a thimble; exterior thereof, and

a pin connecting said plate and thin ible, 'saidpin having a portion of-its length thinned to Jess diameter than other portions thereof, said,

remaining thinned portion being flexible and the portions of the pin being rigid.

I '7. In an-electronic'd V elongated cylindrical constructioni pr'oviding end portions and an'f interr'nediate self-sustaining flexible'shank portion the diameter whereof 'is: materially less than the diameterof; atleast one end. portion thereby permitting lateraldisplacement of one end portioniwith respect to the other and not in. a limitingsense: It is also to be on derstcodithat therfoll-owing' claims are intended to cover all; of the; generic and-specific features of the invention herein shown and described and all-statements of the scope of the inventionherer 'irrset forth as a matter 0 H U v f language which-might be;saidtofallthereloetvveen. j V a gcWc claim: x l V Q In an electronic; device having an electrode,

a su pporting pin forsaid electr-odepsaid pin 'havingfrigid portions -and having a flexible portion,

all of said-portions,being self-sustaining and:

capableof sustaining other portionsQsaid pin as a whole constituting a support for said electrode.

2. In' an electronic device having an electrode,

' a supporting pin for said electrode,-said pinlh'aving rigid portions and having a flexible portion between said rigid portions,v all of said portions being self-sustaining and capablei of sustaining q as a whole constituting aisupport for said'electrode.

by flexing of the intermediate shank portion.

7 -8. In anelectronicldevicega supporting piniof elongated cylindrical construction providingend portions and an intermediate self-sustaining flexible shank portion thelen'gth anddiarneter where-' of is less than'the length; of either of said end,

portions. 7

-9. In anfelectronic vdevice havingva transverse plate andanelectrode attached to .saidplate, a

glass envelopehavin'g a metallic thirnble exterior thereof Withfan enlarged marginal end secured to the glassofsaidenvelope, a pinainfpart Within said 'thimblekand, passing through the enlarged end thereofint'o'the envelope andsecured therein 1 to said plate, said pin having a thinnedportion Vat thepartthereof passing-through thesaid en- 'larged marginal end'lof the thimble, said thinned pOltiOnbGiIlgfiGXiblB and thereby'obtaining flex-T between the glass envelope and the metallic thirn ure as required in thevi'cinity' of the junction ble.- t 3 HAMRTON JENNINGS'DAILEY, WILLIAM JOHN KNOCHEL,

evice, a, supporting pin of 

